SYSTEMS AND METHODS OF ENERGY-SCALED SIGNAL PROCESSING

摘要

A method includes determining a first modeled high-band signal based on a low-band excitation signal of an audio signal, where the audio signal includes a high-band portion and a low-band portion. The method also includes determining scaling factors based on energy of sub-frames of the first modeled high-band signal and energy of corresponding sub-frames of the high-band portion of the audio signal. The method includes applying the scaling factors to a modeled high-band excitation signal to determine a scaled high-band excitation signal and determining a second modeled high-band signal based on the scaled high-band excitation signal. The method includes determining gain parameters based on the second modeled high-band signal and the high-band portion of the audio signal.

主权项

1. A method comprising:
determining a first modeled high-band signal based on a low-band excitation signal of an audio signal, the audio signal including a high-band portion and a low-band portion; determining a first set of one or more scaling factors based on energy of sub-frames of the first modeled high-band signal and energy of corresponding sub-frames of the high-band portion of the audio signal; applying a second set of one or more scaling factors based on at least one among the first set of one or more scaling factors to a modeled high-band excitation signal to determine a scaled high-band excitation signal; determining a second modeled high-band signal based on the scaled high-band excitation signal; and determining gain parameters based on the second modeled high-band signal and the high-band portion of the audio signal.